Book: Belden, Louise C. 1980 Marks of American Silversmiths in the Ineson-Bissell Collection. 506 p.
• An illustrated glossary of spoon terms, pp. 467-488Book: Belden, Louise C. 1980 Marks of American Silversmiths in the Ineson-Bissell Collection. 506 p.
• Example marks, brief background information on Merriman & Bradley, sources, p. 294Book: Belden, Louise C. 1980 Marks of American Silversmiths in the Ineson-Bissell Collection. 506 p.
• Information on Zebul Bradley, p. 72Book: McGrew, John R. 2004 Manufacturers' Marks on American Coin Silver. 176.
• Example of different marks for the Merriman Co., p. 47, 125Book: Bohan, Peter & Hammerslough, Philip H. 1970 Early Conneticut SIlver 1700-1840. 288 p.
• Example of spoon by Marcus Merriman Sr., p. 183Book: Bohan, Peter & Hammerslough, Philip H. 1970 Early Conneticut SIlver 1700-1840. 288 p.
• Information on Marcus Merriman and his partnerships, pp. 243-244Book: Bohan, Peter & Hammerslough, Philip H. 1970 Early Conneticut SIlver 1700-1840. 288 p.
• Information on Zebul Bradley and his partnerships, pp. 224-225